package org.apache.maven.model.building;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

/**
 * Wraps an ordinary {@link URL} as a model source.
 * 
 * @author Benjamin Bentmann
 */
public class UrlModelSource implements ModelSource {

  private URL pomUrl;

  /**
   * Creates a new model source backed by the specified URL.
   * 
   * @param pomUrl The POM file, must not be {@code null}.
   */
  public UrlModelSource(URL pomUrl) {
    if (pomUrl == null) {
      throw new IllegalArgumentException("no POM URL specified");
    }
    this.pomUrl = pomUrl;
  }

  public InputStream getInputStream() throws IOException {
    return pomUrl.openStream();
  }

  public String getLocation() {
    return pomUrl.toString();
  }

  /**
   * Gets the POM URL of this model source.
   * 
   * @return The underlying POM URL, never {@code null}.
   */
  public URL getPomUrl() {
    return pomUrl;
  }

  @Override
  public String toString() {
    return getLocation();
  }

}
